Type-writing machine.



A. 'r. BROWN 5; J. 11'. BARR.

TYPE wm'rmu mom. nruonrox' rum? IA! 1a, 1006.

Patented Nov. 10,1908.

4 SHEETS-SHEET 1.

' I/VVIZ N TORS.

H ITNESSES MW J/Qv-mW v ,4 TTORNE Y.

A. T. BROWN &'J. H. BARR.

Patented Nov. 10, 1908.

4 HHEETS-BHEET 2.

TORS.

INVEN 49113 J I o to o o o o 3 mm m: 9 9 .9 Q o 5 mo no 6 o a: Q Q 9 m 90 a 5 o o o Q. Q m: 9. o a 6 o 0 K o 0. 0 2 9 9 o m o a o o o o 0. a" 9Q o 9 I I \1 o .o o o 6% .o 0.. 9 o o o o o o No 0 t o o m.. o 3 2 t m t.w \t 1 w I v /i q a WITNESSES.-

6 ATTORNEY.

A. T. BROWN 6: J. H. BARR.

TYPE WRITING MACHINE.

nruonxox FILED MAY 1a, 1905.

903,443. Patented Nov. 10, 1908.

4 SHBETS S HEET 3.

o r L W1 TNESSES INVENTORS JMW [3y I I 7 A a Y A. T. BROWN 6: J. H.BARK.

TYPE WRITING MACHINE. APPLICATION FILED HAY 1B, 1905.

Patented Nov. 10,1908.

4 SHEETS-SHEET 4.

3 a. A 0%. M W We W J o M Q o N Mn cs0 V IA'VENTORS.

ATlbR/VEY.

WITNESSES h.

.25 3 is-a top plan view showing the key action,

YORK, A CORPORATION OF NEW YORK.

a 1;; SAID BARR ASSIGNOR NY, or SYRACUSE, NEW

sr nAousl-z, x 10w ro TYPE-WRITING MACHINE. I

Specification Letters Patent.

Patented Nov. 10, 1908.

Application and May 1a, 1905. serial No. 261.645.

To all -u.'h om it may concern:

Be it known that we, 'A'l lavasm-zn 'l. Buowx and Jens lI. BARR,c1t|/.ens of the United States, and residents of'Syracuse, in

5 the county of OnondagaandState of New Yo.rk, have invented certain newand useful improvements in Type-\Vriting Machines, of which thefollowing is a specification.

()ur invention relatcsto t'ypewriting ma- 1o chines and more especiallyto the ty we and l key actions of such nnichines, and it ms for itsobject to provide improved mechanism of thischaracterf l Our inventionconsists in certain features of construction and combinations .and arranemcnts of parts all of which will be fully set iorth herein andparticularly pointed out in the claims.

One embodiment. of our invention is illustrated in the accompanyingdrawings, in

which Figure l is a front to rear vertical sectional view of a.typewriting machine; Fig. Z-is a rear view in' transverse vcrtiuilsection;-Fig.

the u per part of the typewriter being sectione away; Fig. 4 is a viewin transverse vertical section of a portion of the key action as seenfrom the back of the machine; Fig. 5' is an isometrica-l detail view ofa. .portion of said kc action; and Fig. 6 is an isometric-a] view 0' amodified foxm'ot' framing for the kc act-ionf iVe have shown ourinventionapplied to a 85 front-strike machine. it being more especiallydesigned for use; in machines of this characlcr; butmost of the featuresof the invention are also applicable to ot herfstylcs of typewritmg macnines. I r 40 The main frame ofthe machine shown in the drawingscomprises tLlmqc portion eon aistiin of side plates 1 connected togetherby a bacli plate 2. Posts 3, risingfrom the side plates, support a topplate 4. A platen 5 is mounted on a carriage G which is adapted to moveback and forth across the machine on rails mounted on the top plate.Said carriage may be drawn across the. machine I) the usual spring drumor "any suitabe means and the motion of said carriage may be cont-rolledby any suitable step by step ('lel 'ries of type bars 12 on th -the.several ty )e bars.

vice. The. details of the means for supporting and controlling thecarriage have .not been shownin this case as they form no part of thepresent invention.

()ne of the objects of the present. invention is to mounta large numberof type bars in a front strike typewriting machine and the machine shownin the present case comprises eighty-four such typebars arranged in two60 series mounted ontwo separate type ha! sag ments, which occupysubstantiall the same angular space. with reference to t \e printingpoint. As shown in the present case t "t. part of the to a plate just infront of the carriage is arched or dome-shaped and two type bar segments7 and S are secured at their ends to the under side of this portion ofthe top plate, the segment? being of less radius and nearerto theprinting point than the segment 5. .Each of the type barsegmcnts 7 and 8consists of a curved rod or bar of circular cross section and havingcutin its surface a series of annular V-grom'es 5) each of which lies ina planewhich passes through the center of the segments. The segment 7 asshownin Fig. l, is )referabl situated slightly 1 \earer.the back of themac line than the segment 8. The segments are secured to the top plate4-by screws 10 whi h pass through the top plate and are threaded mto theends of the segments. A series of type bars 1] is mounted on the segment7 and a second se- 0. segment 8. Each of the type bars is formed at itspivoted end with an eye. which encircles the segment and which isinternally grooved to form a ball race which cooperates with one .of thegrooves .l which also constitutes a ball race. Anti-friction ballsrunning in these cooperating ball races constitute ball bearin for Thedetails (i ithe construction o the ball race in the eye may be varied inany way without departing from As shown in the present-in- 9 8 ourinvention. stance, said ball raceis formed by two ring: 13 threaded intothe eye of the type bar, one of said rin '5 being threaded in from oneside v and the other from the other side and each of said rings beingbeveled on its inner side 16!)" so that the two rings to e ther form 'aV- groove.in which the antllction balls run.

a screw 1:5".

The eye of each type bar is cut through as shown at 13 and said eye maybe tightened ILlJU .iL the ln' wing rings by tigl'itening a Thisparticular csistruction of ball bearing type bar is not of our jointinvention, but is the sole invention of John 11. Barr. Said bearing ismore fully shown and described and is claimed in the application of saidJohn lI..Ba-rr, filed March 16th, 1905, Serial N 250,444.

The free ends of the type bars normally rest in engagement with acushioned rest or support 14. The type bars 11 are shorter than the typebars 12 and are preferably made of the curved form shown in Fig. 1 sothat the free ends of these type bars rest on the same support 14 as thetype bars 12 without interferin with the enlarged pivot ends of saidtype ars' 12. The arrangement is such that in the basket typebars 11 and12 alternate with each -other.

free-end a socket 15 in which is mounted a single type not shown. Eachof the type bars 11 and 12 has projecting from its pivotcnd an ear 16 towhich is pivoted the upper-end of a link 17'; the. lower end of which ispivoted to an arm 18 projecting rain the rear end of one of a series ofrock shafts 19each of which 'has projecting therefrom near its forwardend an arm 20 to which is pivoted the lower end of a key stern 21 havinga key 22 mounted on the upper end thereof. The rock shafts 19are'journaled at their forward ends in angled frame are secured at theirends to t e side plates of the main frame and which ether oon stitutethe keyboard of the machine. Each of the key stems 21 passes through asuitable o ening in the horizontal portion of its frame p ate 23. Eachof the rock shafts 19 is'p\rovided with a returnin spr' 24 whic iscoiled about said rock shaft at itsforward end and which is connected atone end tothe frame plate 23 and at the other end to the arm 20. Theconstruction is such that if any key be depressed its rock shaft 19 willbe oslates .23 which 'cillatcd and the link 17 connected therewith willoperate the corresponding type bar'to print.

The rock shafts l9 are-journaled at their rear ends in a frame workprovided for the purpose. 'lwo strips or bars 25 and 26 extend acrossthe base portion of the machine beneath the segments 7- and 8, beingsecured at their ends to the side plates 1. A series of verticalframclates '27 are secured at their upper ends to t iestrip or bar 25 and attheir lower ends to the strip or bar 26. Each of the vertical framelates '27 has rejecting thcrcfrmn a series 0 f opening 29 in whichone ofthe shafts 1-9 is journaled. In the present instance there arehorizontal rows or tiers, "ha

shafts in each tier. Said-rock s eighty-four rock shafts 19 arranged inseven twelve rock Each of the type" cars 28 each aving an afts are also,

l disposed in vertical rows or tiers of seven 5 rock shafts each, andeach of these vertical tiers is supported by one of the frame plates 327. The cars 28' are arranged slep fashion as 1 best shown in Fig. 1,the highest one on each i plate 27 being nearest the front of the malchine and the lower ones successively nearer the back of the machine. Itresults from this arrangement that each of the arms 18 inayproject fromits rock shaft 19 in front of the corresponding car 28 and backof thecar 28 next above it. Each of the arn|s,18 is bent toward the back ofthemachine at 30 the point at which the link 17 is pivoted to ear 28 inwhich the corresponding rock shaft 19 is journaled. The advantage'ofthis ar rangement will be understood by reference to Fi 2 in which thesingle type baron the erated position. It wil be perceived that thearm'-1-S connected with this t 'pe bar stands back of the car 28 in thesame iori zontal tier and rojectin from the next frame plate 27 to theleft. fly forming these arms .18 with the off-set bond which has beendescribed any interference between these parts ears 28 also contributesto avoiding interference between'thc various links 17, some of theselinks being nearer the back of the ma chine than' others." As will beseen by reference to Figs. 1 and 2, said links 17 are curved in variouswayswhich' also contributes toward avoiding interference between thedifferent which improves the touch on the keys.

By reference to Fi 2'it will be seen that lwhen the parts are in normalposition the arms 18 are inclined upward at a considera key 18 fullydepressed and the t we bar fully operated said arms are but-litt e pastthe-horizontal position. The result of this arrangemen is a the firstpart of its stroke than it has during the latter part,

the type bar and'a considerable-increase in the speed of the type barrelative to the'key during the latter part of the stroke. This is agreat advantage especially in front strike -t writers where the firstpart-of the'motron of the key not onl has to overcome the inertia ofthetype bar ut also has to lift said type bar against-gravity.

Ve prefer to arrange the two sets, one on each side of the center of themachine, sothat the arms 18 and 20 of each rock shaftextend from'saidrock shaft towards the center of. the machine. It observed that thepresent typewriteris a full key board machine, say, there is a separatekey for each type.

rig it hand side of the fi ure is shown in op-' thus giving an easystart to that s to and in the opposite direction at 31, so that the arm18 is at sonie'distance back 'of the v is avoided. I The steppedarrangement of the j links and also makes said links elastic,

able angle with the horizontal and that when key that has a greatermechanical advantage over the type barduring rock shafts 19 in scans Insuch machines it. usual to arrange the t with said arms, and type barsoperated by lower case keys near the front of the key .board and theupper case keys and other keys that are used comparatively illflt"quently near the back of the key board. It

will be observed that those keys near the front of the machine areconnected with rock shafts 19 near the bottom of the machine and thosekeys near the back of the key board are connected with the upper rockshafts.

It will also be observed that the short type bars 11 are connected withthe lower rock shafts and the long type bars 12 are connected with theupper rock shaft. It will thus he 15 seen that those keys which are usulmost freuently are connected with the shorter and lighter type bars.

The cross bars or strips 25 and 26 and the vertical frame plates 27 arepreferably made of sheet metal, the ears 28 being bent off from the edgeof the plates as clearly shown in 5 Each of the frame plates 27 has bento therefrom at its upper end a horizontal portion 32 and atits lower enda horizontal 2:, portion 33, these horizontal portions being secured tothe strips and 26 respectively by rivets or other suitable means.

In Fi 6 we have illustrated a modification of t 1e framework forsupporting the rear ends of the rock shafts 19. An inc lined bar 35 issecured to the under side of each of the frame plates 1 by screws orrivets Missing through openings 36 in said bar. 'f to two bars 35 arejoined by a series 'of horizontal :5 sheet metal angle-strips or bars37, each formed with a series of ears 38 having openings 39 therein inwhich the shafts 19 are journaled; Each of the strips 37 is formed atits ind with an car 40 through which 40 asses a headed screw 41 which isthreaded into the bar.35 and supports the stri 27. it will be perceivedthat according to tiiis modification a frame piece 37 is provided foreach horizontal tier of rock shafts, whereas ac- 45 cordin to the formshown in the other figures o the drawings a frame. piece 27 is providedfor each vertical tier of rock shafts.

The type bar system and arrangement shown and described in this aplication is not of our 'oint invention but is 818 invention --of JohnBarr and is claimed in the application of said John H. Barr, filed May26th, 1905, Serial No. 262,395.

Various changes may be made in the de- 65 tails of construction andarrangement with- 'out departing from the gist of, our several imrovements.

lat we claim as new and desire to secure by Letters Patent, is z- 1. Ina typewriting machine, the combination, of a series of key-o erated rockshaft-s, extendin from front to ack of the machine,

stepped earings for the rear ends of said i ran roe shafts, armsprojecting from said rock shafts near their rear ends, links connected isaid links, those links that are connected with the lower ro k shaftsstanding hack of 'the ends of the upper rock shafts; of the series.

2. In a. typewriting machine, the combination of a series of keys, aseries of rock shafts operated by said keys, :li'lliS prop-cling fromsaid rock shafts near the l't'ill' ends thereof and bent hark so thatthe fre end uf each of said arms is bark of tin rear end of its rockshaft, links pivoted to said arms, and type bars operated by said links.

3. In a. typcwrit ing nun-lune, i.li(-.('O]'Hl)ll.n. t ion of a seriesof keys, :1 series of rock shafts o erated by said keys, n. frnine inwhich the rear ends of said rock shafts are jtnirnaled, arms projectingfrom said rock shafts and having their free ends standing back of saidframe, links connected witlhsnid arms, and type bars operated by so idlinks.

4. In a typewriling i'nnrhine, the combination of a series of keys, 1-series of rock shafts operated by said keys. a frame n which the rearends of said rock shafts n-e journaled, the bcnrin s for the lower rockshafts being nearer the lnack of the i'nnchine than those of the upperrock shafts, arms projecting from said rock shafts near the rear endsthereof, the free end of each of said arms; standing back of the end ofits rock shaft, links connected with said arms, and type bars operatedby said links. Y

5. In a typewriting machine, the combination of a series of keys, aseriesof horizontally disposed, key operated rock shafts, and a frame inwhich the rear ends of said rock shafts are-journaled, said framecomprising two bars or strips, and a series of cross pieces havingbearings for said rock shafts, those bearings near the bottom of theframe being nearer the bark of the machine then those near the to of theframef 6. In a f iont strike typewriting machine, the combination of aseries of type bars segmentally arranged below the printing ointin twosets, the type bars of one set liein shorter than those of the other, aseries 0' keys, a series of key operated rock shafts, the keys near thefront of the key board being connected with the lower rock shafts of thei series, and said lower rock shafts being con nected with the shortertype bars, and the keys near the back of the keyboard bein connectedwith the upper rock shafts, and said upper rock shafts being connectedwith the longer type bars. y

7. In a front strike typewriting machine,

the combination of two segments, one of bars pivo tally mounted on saidsegment-s, t-

t pe bars on one segment alternating with those on the other; a seriesof rock shafts ared in horizontal tiers and each rock I sha t having anarm; links, each connect-ed l at one end to a type but and at the otherend shorter and the other of longer radius; type too to one of saidei'ms; enu x'eys for operating de a, and State of New York this 10th daysaid rock shafts, the rock shafts of the upper 01 sy A. D. 1905. tiersbeing connected with the t bars on ALEXANDER T. BROWN.

the segment of greater radius an the rock v JOHN H. BARR. 5 shafts ofthe lower tiers being connected with Witnesses:

the type bars on the segment of less' radius. E. E. CORY,

Signed at Syracuse, 1n the county of Chem A. L.' HINMAN.

